PEM Parser & Certificate Decoder

By Anish Nath - Security Engineer & Cryptography Expert | @anish2good | Last Updated: January 23, 2025 | 4.8/5 (892 reviews)
Privacy-First No Data Stored 100% Free
PEM Input
Select a sample file to load into the textarea below
Paste your PEM certificate, private key, public key, CSR, CRL, or PKCS7 format
Required only for encrypted private keys (DES-EDE3-CBC)
Parsed Results

Parsed certificate details will appear here

Paste your PEM format and click "Parse & Decode PEM"

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Privacy Guarantee: Private keys you enter or generate are never stored on our servers. All tools are served over HTTPS.

Supported PEM Formats

Certificates & Requests
  • -----BEGIN CERTIFICATE-----
    X.509 Certificate (CRT)
  • -----BEGIN CERTIFICATE REQUEST-----
    Certificate Signing Request (CSR)
  • -----BEGIN NEW CERTIFICATE REQUEST-----
    New Format CSR
  • -----BEGIN X509 CRL-----
    Certificate Revocation List
  • -----BEGIN PKCS7-----
    PKCS#7 format
Keys
  • -----BEGIN RSA PRIVATE KEY-----
    PKCS#1 RSA Private Key (supports encrypted)
  • -----BEGIN RSA PUBLIC KEY-----
    PKCS#1 RSA Public Key
  • -----BEGIN PRIVATE KEY-----
    PKCS#8 Private Key
  • -----BEGIN PUBLIC KEY-----
    X.509 SubjectPublicKeyInfo
  • -----BEGIN DSA PRIVATE KEY-----
    DSA Private Key (supports encrypted)
  • -----BEGIN EC PRIVATE KEY-----
    Elliptic Curve Private Key
Note: Encrypted private keys (with Proc-Type: 4,ENCRYPTED and DEK-Info) require a password. The tool supports DES-EDE3-CBC encryption. Enter the password in the "Certificate Password" field above.

About This Tool & Author

Expert-Maintained Cryptography Tool

This PEM parser is developed and maintained by Anish Nath ( @anish2good), a Security Engineer and Cryptography Expert with extensive experience in network security and cryptographic implementations. The tool has been serving the developer and DevOps community since 2017, with over 892 verified reviews averaging 4.8/5 stars.

Security & Privacy Commitment

  • No Data Collection: Your certificates and keys are processed securely and are not stored on our servers. Nothing is logged or retained.
  • Industry Standards: Uses proven cryptographic libraries implementing X.509, PKCS standards, and OpenSSL compatibility.
  • Regular Updates: Tool is actively maintained with security best practices and format support updated regularly.
  • Open Source Standards: Compatible with OpenSSL, Java KeyStore, and all major cryptographic implementations.

Version History

  • v2.0 (Jan 2025): Enhanced UX, improved parsing, added EEAT signals
  • v1.5 (2020): Added PKCS7 and additional format support
  • v1.0 (2017): Initial release with basic PEM parsing
Official Resources

Learn more about PEM formats and certificates:

Community

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Trust Signals
  • 8+ years of service
  • 892 verified reviews
  • Active maintenance
  • Privacy-first approach
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